COMPOSITE. (composite FAMILY.) 217 



8. C. villosa, Nutt. Eough-haiiy and somewhat hoary throughout ; stem 

 rigid, very leafy ; leaves lanceolate, acute, entire or sparingly serrate ; the upper 

 ones sessile, the lowest nan-owed into a petiole ; heads large, in a simple corymb. 

 — Dry soil, Alabama, and westward. Scj)!. — Stem l°-2° high. Leaves 1' 

 long, fringed near the base. 



9. C. decumbens, n. sp. Stems decumbent, simple, silky-villous ; leaves 

 villous, lanceolate-oblong, obtuse, entire, sessile, leafy in the axils ; the lowest 

 spatulate-oblong, clustered; heads large, in a loose corymbose panicle; the 

 peduncles and involucre glandular-pubescent ; rays about 2.5, showy ; achenia 

 hairy, furrowed ; exterior pappus bristly. — Sandy shores on St. Vincent's Island, 

 West Florida. Oct. and Nov. (S) — Stems 2° -4° long. Upper leaves |'- 1' 

 long, the lowest .3' -4'. Heads largest of all. 



25. IlsrULA, L. Elecampane. 



Heads many-flowered. Rays pistillate. Scales of the involucre imbricated in 

 several rows. Receptacle flat or convex, naked. Anthers bicaudate at the base. 

 Pappus single, of capillaiy slightly scabrous bristles. — Perennial herbs. Flow- 

 ers yellow. 



1. I. Helenium, L. Stem stout ; leaves large, ovate, denticulate, tomen- 

 tose beneath ; the lowest ones petioled, the upper clasping ; heads very large, 

 somewhat corv'mbose ; outer scales of the involucre broadly ovate, leafy ; rays 

 numerous, narrow ; achenia 4-sided, smooth. — Mountains of North Carolina. 

 Introduced. 



26. COlSrYZA, L. 



Heads many-flowered ; the exterior flowers pistillate, fertile, in several rows ; 

 the corolla filiform, 2-3-toothed ; a few of the central flowers staminate, with a 

 tubular, .5-toothed corolla. Scales of the involucre in several rows. Receptacle 

 punctate. Pappus a single row of capillary bristles. — Branching herbs, with 

 toothed-lobed leaves, and heads of yellow flowers in corymbs or panicles. 



1. C. ambigua, DC. Rough-hairy; lower leaves oblong-lanceolate, lobed, 

 the upper entire, linear; heads panicled. (C sinuata, Ell.) — Around Charles- 

 ton. Introduced. April -July. — Stem 2° high. 



27. BACCHAKIS, L. 



Heads direcious, many-flowered ; the flowers all tubular. Corolla of the sterile 

 flowers 5-cleft ; of the fertile ones filiform, nearly entire, without anthers ; style 

 exserted. Scales of the oblong or hemispherical involucre imbricated in sev- 

 eral rows. Receptacle naked or somewhat chaffy. Achenia ribbed. Pappus 

 of the sterile flowers capillary, in a single row, as long as the involucre ; of the 

 fertile flowers in 1 - several rows, commonly much longer than the involucre. — 

 Smooth and resinous shrubs. Leaves alternate. Flowers white. 



1. B. halimifolia, L. Branches angled; leaves ohovate, or oblong-ob- 

 ovate, toothed above the middle, the uppermost lanceolate, entire ; heads pcdun- 

 19 



